The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of increase (decrease) in carrying value of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Goodwill and Intangible Assets - Intangible Assets - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Finite Lived Intangible Assets [Line Items]
Intangible assets amortization expense		$ 37.7	$ 42.9	$ 38.6
2022		40.2
2023		39.2
2024		38.7
2025		38.5
2026		38.5
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Adjustment to decrease the remaining book value of intangible asset	$ 4.5	$ 4.5